/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

#include <stdio.h>
#include <plc4c/spi/evaluation_helper.h>
#include "cotp_parameter.h"

// Code generated by code-generation. DO NOT EDIT.

// Array of discriminator values that match the enum type constants.
// (The order is identical to the enum constants so we can use the
// enum constant to directly access a given types discriminator values)
const plc4c_s7_read_write_cotp_parameter_discriminator plc4c_s7_read_write_cotp_parameter_discriminators[] = {
  {/* plc4c_s7_read_write_cotp_parameter_tpdu_size */
   .parameterType = 0xC0 },
  {/* plc4c_s7_read_write_cotp_parameter_calling_tsap */
   .parameterType = 0xC1 },
  {/* plc4c_s7_read_write_cotp_parameter_called_tsap */
   .parameterType = 0xC2 },
  {/* plc4c_s7_read_write_cotp_parameter_checksum */
   .parameterType = 0xC3 },
  {/* plc4c_s7_read_write_cotp_parameter_disconnect_additional_information */
   .parameterType = 0xE0 }

};

// Function returning the discriminator values for a given type constant.
plc4c_s7_read_write_cotp_parameter_discriminator plc4c_s7_read_write_cotp_parameter_get_discriminator(plc4c_s7_read_write_cotp_parameter_type type) {
  return plc4c_s7_read_write_cotp_parameter_discriminators[type];
}

// Create an empty NULL-struct
static const plc4c_s7_read_write_cotp_parameter plc4c_s7_read_write_cotp_parameter_null_const;

plc4c_s7_read_write_cotp_parameter plc4c_s7_read_write_cotp_parameter_null() {
  return plc4c_s7_read_write_cotp_parameter_null_const;
}


// Parse function.
plc4c_return_code plc4c_s7_read_write_cotp_parameter_parse(plc4c_spi_read_buffer* readBuffer, uint8_t rest, plc4c_s7_read_write_cotp_parameter** _message) {
  uint16_t startPos = plc4c_spi_read_get_pos(readBuffer);
  plc4c_return_code _res = OK;

  // Allocate enough memory to contain this data structure.
  (*_message) = malloc(sizeof(plc4c_s7_read_write_cotp_parameter));
  if(*_message == NULL) {
    return NO_MEMORY;
  }
        // Discriminator Field (parameterType)

  // Discriminator Field (parameterType) (Used as input to a switch field)
  uint8_t parameterType = 0;
  _res = plc4c_spi_read_unsigned_byte(readBuffer, 8, (uint8_t*) &parameterType);
  if(_res != OK) {
    return _res;
  }

  // Implicit Field (parameterLength) (Used for parsing, but it's value is not stored as it's implicitly given by the objects content)
  uint8_t parameterLength = 0;
  _res = plc4c_spi_read_unsigned_byte(readBuffer, 8, (uint8_t*) &parameterLength);
  if(_res != OK) {
    return _res;
  }

  // Switch Field (Depending on the discriminator values, passes the instantiation to a sub-type)
  if(parameterType == 0xC0) { /* COTPParameterTpduSize */
    (*_message)->_type = plc4c_s7_read_write_cotp_parameter_type_plc4c_s7_read_write_cotp_parameter_tpdu_size;
                    
    // Simple Field (tpduSize)
    plc4c_s7_read_write_cotp_tpdu_size* tpduSize;
    _res = plc4c_s7_read_write_cotp_tpdu_size_parse(readBuffer, (void*) &tpduSize);
    if(_res != OK) {
      return _res;
    }
    (*_message)->cotp_parameter_tpdu_size_tpdu_size = *tpduSize;

  } else 
  if(parameterType == 0xC1) { /* COTPParameterCallingTsap */
    (*_message)->_type = plc4c_s7_read_write_cotp_parameter_type_plc4c_s7_read_write_cotp_parameter_calling_tsap;
                    
    // Simple Field (tsapId)
    uint16_t tsapId = 0;
    _res = plc4c_spi_read_unsigned_short(readBuffer, 16, (uint16_t*) &tsapId);
    if(_res != OK) {
      return _res;
    }
    (*_message)->cotp_parameter_calling_tsap_tsap_id = tsapId;

  } else 
  if(parameterType == 0xC2) { /* COTPParameterCalledTsap */
    (*_message)->_type = plc4c_s7_read_write_cotp_parameter_type_plc4c_s7_read_write_cotp_parameter_called_tsap;
                    
    // Simple Field (tsapId)
    uint16_t tsapId = 0;
    _res = plc4c_spi_read_unsigned_short(readBuffer, 16, (uint16_t*) &tsapId);
    if(_res != OK) {
      return _res;
    }
    (*_message)->cotp_parameter_called_tsap_tsap_id = tsapId;

  } else 
  if(parameterType == 0xC3) { /* COTPParameterChecksum */
    (*_message)->_type = plc4c_s7_read_write_cotp_parameter_type_plc4c_s7_read_write_cotp_parameter_checksum;
                    
    // Simple Field (crc)
    uint8_t crc = 0;
    _res = plc4c_spi_read_unsigned_byte(readBuffer, 8, (uint8_t*) &crc);
    if(_res != OK) {
      return _res;
    }
    (*_message)->cotp_parameter_checksum_crc = crc;

  } else 
  if(parameterType == 0xE0) { /* COTPParameterDisconnectAdditionalInformation */
    (*_message)->_type = plc4c_s7_read_write_cotp_parameter_type_plc4c_s7_read_write_cotp_parameter_disconnect_additional_information;
                    
    // Array field (data)
    plc4c_list* data = NULL;
    plc4c_utils_list_create(&data);
    if(data == NULL) {
      return NO_MEMORY;
    }
    {
      // Count array
      uint16_t itemCount = (uint16_t) rest;
      for(int curItem = 0; curItem < itemCount; curItem++) {
        
        char* _value = malloc(sizeof(char));
        _res = plc4c_spi_read_char(readBuffer, (char*) _value);
        if(_res != OK) {
          return _res;
        }
        plc4c_utils_list_insert_head_value(data, _value);
      }
    }
    (*_message)->cotp_parameter_disconnect_additional_information_data = data;

  }

  return OK;
}

plc4c_return_code plc4c_s7_read_write_cotp_parameter_serialize(plc4c_spi_write_buffer* writeBuffer, plc4c_s7_read_write_cotp_parameter* _message) {
  plc4c_return_code _res = OK;

  // Discriminator Field (parameterType)
  plc4c_spi_write_unsigned_byte(writeBuffer, 8, plc4c_s7_read_write_cotp_parameter_get_discriminator(_message->_type).parameterType);

  // Implicit Field (parameterLength) (Used for parsing, but it's value is not stored as it's implicitly given by the objects content)
  _res = plc4c_spi_write_unsigned_byte(writeBuffer, 8, (plc4c_s7_read_write_cotp_parameter_length_in_bytes(_message)) - (2));
  if(_res != OK) {
    return _res;
  }

  // Switch Field (Depending of the current type, serialize the sub-type elements)
  switch(_message->_type) {
    case plc4c_s7_read_write_cotp_parameter_type_plc4c_s7_read_write_cotp_parameter_tpdu_size: {

      // Simple Field (tpduSize)
      _res = plc4c_s7_read_write_cotp_tpdu_size_serialize(writeBuffer, &_message->cotp_parameter_tpdu_size_tpdu_size);
      if(_res != OK) {
        return _res;
      }

      break;
    }
    case plc4c_s7_read_write_cotp_parameter_type_plc4c_s7_read_write_cotp_parameter_calling_tsap: {

      // Simple Field (tsapId)
      _res = plc4c_spi_write_unsigned_short(writeBuffer, 16, _message->cotp_parameter_calling_tsap_tsap_id);
      if(_res != OK) {
        return _res;
      }

      break;
    }
    case plc4c_s7_read_write_cotp_parameter_type_plc4c_s7_read_write_cotp_parameter_called_tsap: {

      // Simple Field (tsapId)
      _res = plc4c_spi_write_unsigned_short(writeBuffer, 16, _message->cotp_parameter_called_tsap_tsap_id);
      if(_res != OK) {
        return _res;
      }

      break;
    }
    case plc4c_s7_read_write_cotp_parameter_type_plc4c_s7_read_write_cotp_parameter_checksum: {

      // Simple Field (crc)
      _res = plc4c_spi_write_unsigned_byte(writeBuffer, 8, _message->cotp_parameter_checksum_crc);
      if(_res != OK) {
        return _res;
      }

      break;
    }
    case plc4c_s7_read_write_cotp_parameter_type_plc4c_s7_read_write_cotp_parameter_disconnect_additional_information: {

      // Array field (data)
      {
        uint8_t itemCount = plc4c_utils_list_size(_message->cotp_parameter_disconnect_additional_information_data);
        for(int curItem = 0; curItem < itemCount; curItem++) {

          char* _value = (char*) plc4c_utils_list_get_value(_message->cotp_parameter_disconnect_additional_information_data, curItem);
          plc4c_spi_write_char(writeBuffer, *_value);
        }
      }

      break;
    }
  }

  return OK;
}

uint16_t plc4c_s7_read_write_cotp_parameter_length_in_bytes(plc4c_s7_read_write_cotp_parameter* _message) {
  return plc4c_s7_read_write_cotp_parameter_length_in_bits(_message) / 8;
}

uint16_t plc4c_s7_read_write_cotp_parameter_length_in_bits(plc4c_s7_read_write_cotp_parameter* _message) {
  uint16_t lengthInBits = 0;

  // Discriminator Field (parameterType)
  lengthInBits += 8;

  // Implicit Field (parameterLength)
  lengthInBits += 8;

  // Depending of the current type, add the length of sub-type elements ...
  switch(_message->_type) {
    case plc4c_s7_read_write_cotp_parameter_type_plc4c_s7_read_write_cotp_parameter_tpdu_size: {

      // Simple field (tpduSize)
      lengthInBits += plc4c_s7_read_write_cotp_tpdu_size_length_in_bits(&_message->cotp_parameter_tpdu_size_tpdu_size);

      break;
    }
    case plc4c_s7_read_write_cotp_parameter_type_plc4c_s7_read_write_cotp_parameter_calling_tsap: {

      // Simple field (tsapId)
      lengthInBits += 16;

      break;
    }
    case plc4c_s7_read_write_cotp_parameter_type_plc4c_s7_read_write_cotp_parameter_called_tsap: {

      // Simple field (tsapId)
      lengthInBits += 16;

      break;
    }
    case plc4c_s7_read_write_cotp_parameter_type_plc4c_s7_read_write_cotp_parameter_checksum: {

      // Simple field (crc)
      lengthInBits += 8;

      break;
    }
    case plc4c_s7_read_write_cotp_parameter_type_plc4c_s7_read_write_cotp_parameter_disconnect_additional_information: {

      // Array field
      lengthInBits += 8 * plc4c_utils_list_size(_message->cotp_parameter_disconnect_additional_information_data);

      break;
    }
  }

  return lengthInBits;
}

